Feature:1. 42L Large Capacity: 42 liters capacity oxygen bag can be easily used to meet daily oxygen requirements, suitable for various scenes.2. Good Airtightness: Oxygen storage inhaler is easy and convenient to use, with nylon rubber coated fabric and the gas is not leakage.3. PVC Material: Portable oxygen bag made of high quality PVC materials, firm and wear resisting, durable and can be used for a long time.4. Lightweight And Portable: Oxygen carry bag is light in weight and small in size, foldable design make it is easy to carry when going out.5. Widely Use: Suitable for chronic bronchitis, bronchial asthma, emphysema, chronic obstructive lung disease, lung pneumoconiosis, silicosis cardiovascular system diseases, etc.Specification:Item Type: Portable Oxygen Bag Material: PVCCapacity: 42 LitersAdvantages: Nylon rubber coated fabric, with high strength, light and beautiful, easy to use..Package List:1 x Oxygen Bag 1 x Rubber Duct 1 x Stop Valve Switch1 x Nasal Oxygen Tube